from The Century Dictionary and Cyclopedia

Etymologies

Examples

We need to adopt a scientific approach to things because the hour is getting very late to be able to indulge in having key decisions made by religious people; by irrationalist by those who will steer the ship by faith and not by a compass but by the equal of reading the entrails of a chicken.

It is not and should never be, as has happened with the irrationalist, pseudo-scientific, anti-metaphysical, socialist left who control all modes of political thought in intellectual ‘debate’ these days, a method of creating a new God who actively attempts to snuff out divergent and opposed opinion.

Bottom-up works better than anything when we're guessing or when accurate/expert measurements cannot be made, but when such measurements can be made top-down is the more rational option and bottom-up simply becomes irrationalist, almost superstitious, populism.

And they can then jump on it and hold it up as a prime example of how all those fags and feminazis and blacks, all those radicals and activists and liberals, are all full of patently whacky ideas and bound into an irrationalist groupthink.

In that case all that is necessary to ensure immunity for the irrationalist agents is that they should put forward their propaganda under the pretence that it is itself a special science, which therefore other scientists will understand that they must not criticise'.

I mean, there's a sort of irrationalist fiction that was published as sf in the past and is generally published as fantasy now, in which the approach to the strange events is a distinct style of anti-rationalisation.